// C# Extension Method

// Doc: https://csharp-extension.com/en/method/1002737/object-setfieldvalue

​

// @nuget: Z.ExtensionMethods

using System;

public class Program

{

    public static void Main()

    {

        var obj = new TestClass();

​

        //C# Extension Method: Object - SetFieldValue   

        obj.SetFieldValue("PublicField", 5);

        obj.SetFieldValue("InternaStaticlField", 30);

        Console.WriteLine(obj.PublicField);

        Console.WriteLine(TestClass.InternaStaticlField);

    }

    public class TestClass

    {

        internal static int InternaStaticlField = 2;

        public int PublicField = 1;

    }

}